Friction draft-rigging for railway-cars.



PATENTED FEB. 14, 1905.

P. N. MOORE. FRICTION DRAFT RIGGING FOR RAILWAY CARS.

APPLIOATION FILED SEPT. 8. 1904.

2 SHEETS-SHEET 2.

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[NI EN T OR A/er WMOOr-e M t M AMA T T ORNE Y5 NITED STATES Patented February 14, 1905.

PETER N. MOORE, OF MILWVAUKEE, VVISOONSIN.

FRICTION DRAFT-RIGGING FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 782,794, dated February 14, 1905.

Application filed September 8, 1904. Serial No. 223,720.

To all whom, it nuty concern:

Be it known that I, PETER N. MooRE, a citi- Zen of the United States, residing in Milwaukee, in the county of Milwaukee and State of isconsin, have invented a new and useful Improvement in Friction Draft-Rigging for Railway-Oars, of which the following is a specification.

My invention relates to improvements in friction draft-rigging for railway-cars.

The object of my invention is to provide a friction draft-rigging of asimple, strong, eflicient, and durable construction capable of exerting a great frictional resistance and which may be arranged between the ordinary followers and stop castings customarily employed in railway draft-rigging.

My invention consists in the means I employ to practically accomplish this object or result that is to say, it consists, in connection with the draw-bar, draw-bar strap or extension, side plates or stop-castings, and front and rear followers, of a sliding friction-shell, preferably rectangular in cross-section, a transversely arranged spring inside the shell, spring-caps or bearing-blocks for the spring ha ing oppositely-inclined or wedging faces, and two pairs of friction-slides having longitudinal friction-faces engaging the interior longitudinal friction-faces of the shell and provided with inclined or wedging faces engaging the inclined or wedging faces of the springcaps or bearing-blocks.

My invention also consists in the novel construction of parts and devices and in the novel combinations of parts and devices herein shown or described.

In the accompanying drawings, forming a part of this specification, Figure 1 is a central vertical longitudinal section of a friction draft-rigging embodying my invention. Fig. 2 is a horizontal section. Fig. 3 is a partial cross-section on line 3 3 of Fig. 2. Fig. 4: is

draw-bar strap or extension, secured to the draw-bar by bolts or rivets I).

D D are the side plates or stop-castings, having front stops (Z and rear stops (Z for the front and rear followers E and E to abut against and upper and lower guides (Z d for the followers to reciprocate on or between. The upper guide (Z is preferablyintegral with the side plate or stop-casting D, and the lower guide (Z is preferably a separate bar or plate secured in place by bolts J to permit the ready insertion and removal of thedraft-rigging.

F and f are transversely-arranged springs abutting at their ends against the spring-caps or bearing-blocks F F, each of which is furnished with oppositely inclined wedgingfaces 7 G is asliding friction-shell, preferably rectangular in cross-section, having interior longitudinal friction-faces g.

H H and H H are two pair of sliding friction-blocks, each having an exterior longitudinal friction-face h in sliding frictional engagement with the interior friction-surface of the friction-shell G. Each of the sliding friction-blocks H H is also furnished with an inclined or wedging face it, engaging the correspondingly inclined or wedging face 1 of the spring-cap or bearing-block F.

The operation is as follows: In buffing the front follower E and front pair of sliding friction-blocks H H move with the draw-bar, while the rear follower E and rear pair of friction-blocks H H are held stationary by the rear stops on the side plates or stop-castings D, thus causing the transversely-arranged spring to be compressed by reason of the inter-engaging or inclined wedging-faces on the sliding friction-blocks H H and on the springcaps or bearing-blocks F, and thereby produce powerful frictional resistance between the interengaging frictional surfaces on the friction-blocks and friction-shell G, the friction-shell G moving backward in respect to the rear friction-blocks H H to a less extent than the front pair of friction-blocks H H. In pulling the operation is the same, but the reverse, the front follower and front pair of friction-blocks H H being now held stationary, while the rear follower and rear pair of friction-blocks H H move with the draw-bar, and the friction-shell Gr also moving forward with the draw-baig'but only to half the extent of the forward inovementof the rear follower E and rear pair of sliding friction-blocks H H.

1. In a friction draft-rigging, the combination with the draw-bar, draw-bar extension, sideplates or stop-castings, and followers, of a slidingfriction-shell having interior longitudinal friction-surfaces, two pair of sliding friction-blocks havinglongitudinal frictional surfaces in frictional engagement with said shell, each of said sliding friction-blocks being provided with an inclined 0r wedging face, a transversely-arranged spring inside said shell, and a pair of sprhug-caps or bearing-blocks for the spring, having inclined or wedging faces en- 20 

